Shini Large Flow, Manual

Page: 53 / 62

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5.
Trouble-shooting
Failures Possible reasons Solutions
LCD displays nothing
after switch on power
and press ON/OFF
key.
Did not connect through power
supply.
Main switch broken.
Power supply wires problems.
Control circuit fuse melt.
Transformer broken.
Connect through power supply.
Replace main switch.
Check electrical wires.
Fix the fuse.
Replace the transformer.
Phase alarm.
Power supply low voltage.
Phase shortage.
Phase reversal.
PCB problems.
Check power supply.
Check power supply.
Exchange two of the wires of power
supply.
Replace the PCB.
Pump overload.
Abnormal fluctuations of power
supply.
Pump blocked.
Pump motor problems.
Overload relay (F1) setting value
error.
Check power supply.
Check the pump.
Check pump motor.
Set the current of overload relay to 1.1
times of motor rated current. Please
refer to Mian Components for detailed
description of overload relaly.
Reset overload relay:
Wait for one minute, then press the blue
button to reset.
EGO overheat.
EGO temperature setting mistakes.
EGO poor temperature detecting.
Heater contactor problems.
Correctly set EGO temperature. (EGO
temperature setting value= temperature
setting value+10
℃
)
Replace EGO.
Replace the contactor.
Low liquid level. Oil shortage. Fill high temp. oil.
Temp. window displays
“
----
“
Abnormal sensor. Check and repair sensor.
Once running, pump
output indicator works,
but pump cannot start.
After a while pump still
fails to run.
PCB output relay problems.
Electrical circuit problems.
Pump contactor problem. Check or replace the PCB.
Check electrical circuit.
Replace the contactor.
Difference between
setting temp. and
actual temp. is too big.
Too short time after machine
startup.
Temperature parameter setting
error.
Cooling solenoid valve problems. Wait for a while.
Check temperature parameters.
Please refer to the standard manual of
setting parameters.
Replace solenoid valve.
Temperature can't rise
up.
Heater contactor problems.
Heater pipe problems.
Thermocouple problems.
PCB output point problems. Replace the contactor.
Replace pipe heater.
Replace thermocouple.
Check/ repair PCB.
Circuit breaker trips off
when turning on main
power switch. Short circuit of main circuit.
Transformer short circuit or
connected with earth wire.
Check electrical wire.
Replace circuit breaker.